Berry phase of two coupled quantum dots

Variational approach to strong correlation in the photoemission of electron-doped superconductors

“…However, several numerical studies [8,9] and recent ARPES experiments [14,15] still away from Fermi surface up to higher dopings which have agreed with us. Whether this is a homogeneous state of coexistence of AF and SC order [31,32] is still unclear. In addition, the existence of a short-range AF ordering [15], which exhibits a weak intensity of the folded bands, may also be another possibility.…”

Nodelessd-Wave Superconducting Pairing due to Residual Antiferromagnetism in UnderdopedPr2−xCexCuO4−Das1, Markiewicz2, Bansil3 2007Phys. Rev. Lett.5516650View full textAdd to dashboardCite

“…To understand the interplay between AFM and SC orders and the role of AFM order in modifying the pairing [19,20], in this Letter we directly evaluate the PD in a model with coexisting AFM and SC order. We assume a SC gap of d-wave pairing with a combination of first and third harmonics, which is necessary to incorporate nonmonotonic gap variations [2,17].…”

Jahn-Teller systems from a cavity QED perspective

“…The degeneracy point is not, however, identified as a CI in these works, and the rotating wave approximation (RWA) has been applied which is not the case in the present article. In addition, in the situation studied here, the geometrical phase is said to be of dynamical character as it originates from the intrinsic evolution of the system [11] rather than from "external" changing of the Hamiltonian [21,22,23]. Thus, the circumstances and approaches are notably different between this work and the ones of Refs.…”